Back for a second season, Mad Men makes the '60s fresh again with delicious details and a timeless story of self-reinvention. Welcome to Camelot, with a twist

"Nostalgia. It's delicate. But potent." It's November 1960, and ad writer Don Draper (Jon Hamm), in the first-season finale of Mad Men, is pitching a room of Kodak executives on a campaign for their new slide projector. He's loaded the carousel with his family pictures, a poignant gesture because of what we know about him: not only does he cheat on his wife--prolifically--but he also hides his true identity from her and the rest of the world. Born Dick Whitman and orphaned as a boy, he went to Korea, swiped the dog tags of a fallen soldier (the real Draper), abandoned...